package com.itheima_01;

import java.io.PrintStream;

public class SystemOutDemo {
    public static void main(String[] args) {
        //public static final PrintStream out:标准输出流
        PrintStream ps = System.out;

        //能够方便地打印各种数据值
        ps.println("hello");
        ps.print(11);

        //System.out的本质是一个字节输出流
        System.out.print("100");
    }
}
